Engine exhaust gas purification device

Details Engine exhaust gas purification device Engine exhaust gas purification device

2006-12-12

2006-12-12

Greene, Jason M. (Department: 1724)

Gas separation: processes

With control responsive to sensed condition

C095S019000, C095S020000, C095S023000, C095S273000, C095S278000, C055S282200, C055S282300, C055S385300, C055S523000, C055S524000, C055SDIG010, C055SDIG030, C096S420000, C096S421000, C096S422000, C060S273000, C060S297000, C060S311000

Reexamination Certificate

active

07147688

ABSTRACT:
A map which defines a relationship of an exhaust gas pressure P2at the outlet of a filter (13) to a load Q and rotation speed Ne of an engine (1) is prepared, and an exhaust gas pressure P1at the inlet to the filter (13) is determined from a differential pressure ΔP between the front and rear of the filter and the outlet pressure P2obtained by referring to the map. The inlet pressure P1determined in this manner is used to determine an exhaust gas volumetric flow rate Q1, and thus an accurate particulate accumulation SM, which is required to determine the need for regeneration of the filter (13), can be calculated.

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